Patent US2630249A successfully refreshed from Google Patents.
US2630249A
Expired / Lapsed
US
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Liquid fertilizer feeder for irrigation systems
Assignee: Individual
•
Filing: 1948-08-09
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Granted: 1953-03-03
•
Expires: 1968-08-09
Abstract
No abstract record available.
Inventors
- 👤 Fred R Bryant
- 👤 Edward A Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:38
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/04; A01C23/042; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US851274A
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US1290544A
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US1361752A
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US1562633A
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US1667923A
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US1707938A
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US1808854A
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US1985570A
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US2321041A
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US2421765A
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US2508142A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |